/*-
 * Public platform independent Near Field Communication (NFC) library examples
 * 
 * Copyright (C) 2009, Roel Verdult
 * Copyright (C) 2010, Romuald Conty
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *  1) Redistributions of source code must retain the above copyright notice,
 *  this list of conditions and the following disclaimer. 
 *  2 )Redistributions in binary form must reproduce the above copyright
 *  notice, this list of conditions and the following disclaimer in the
 *  documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 * 
 * Note that this license only applies on the examples, NFC library itself is under LGPL
 *
 */

/* Turns the NFC device into a D.E.P. initiator (see NFCIP-1)  */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <signal.h>

#include <host/nfc.h>

#include "nfc-utils.h"

#define MAX_FRAME_LEN 264

static nfc_device_t *pnd;

void stop_dep_communication (int sig)
{
	(void)sig;
	if (pnd)
		nfc_abort_command(pnd);
	else
		exit(EXIT_FAILURE);
}

int main(int argc, const char *argv[])
{
	nfc_target_t nt;
	byte_t abtRx[MAX_FRAME_LEN];
	size_t szRx = sizeof (abtRx);
	byte_t abtTx[] = "Hello World!";
	
	if (argc > 1) {
		printf("Usage: %s\n", argv[0]);
		return EXIT_FAILURE;
	}
	
	pnd = nfc_connect(NULL);
	if (!pnd) {
		printf("Unable to connect to NFC device.\n");
		return EXIT_FAILURE;
	}
	printf("Connected to NFC device: %s\n", pnd->acName);
	
	signal(SIGINT, stop_dep_communication);
	
	if (!nfc_initiator_init(pnd)) {
		nfc_perror(pnd, "nfc_initiator_init");
		return EXIT_FAILURE;
	}
	
	if (!nfc_initiator_select_dep_target(pnd,
					     NDM_PASSIVE, NBR_212,
					     NULL, &nt)) {
		nfc_perror(pnd, "nfc_initiator_select_dep_target");
		goto error;
	}
	print_nfc_target(nt, false);
	
	printf("Sending: %s\n", abtTx);
	if (!nfc_initiator_transceive_bytes(pnd,
					    abtTx, sizeof(abtTx),
					    abtRx, &szRx, NULL)) {
		nfc_perror(pnd, "nfc_initiator_transceive_bytes");
		goto error;
	}
	
	abtRx[szRx] = 0;
	printf("Received: %s\n", abtRx);
	
	nfc_initiator_deselect_target(pnd);
	
error:
	nfc_disconnect(pnd);
	return EXIT_SUCCESS;
}
